I set out to make my own. And while I was painstakingly editing the file the hubs asked if I was going to share them on my blog and put all that effort to good use. I decided that it wasn't such a bad idea. So here you are, a free and editable Silhouette Studio file to use in your planner/crafting. I printed them on Silhouette White Sticker paper and then used my Cameo to cut them out. One sheet is a year's worth of numerals and I grouped them so that the colors are editable in groups by month.
Calendar Numerals File - .studio file
I've never tried to file share on the ol'blog before, hopefully this works.